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Finding the Fourth Proportional to 259,297.90, 388,791.27 and 101,338.18

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Solution

The fourth proportional to 259,297.90, 388,791.27 and 101,338.18 is: 151,946.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,297.90 : 388,791.27 = 101,338.18 : x
  2. Step 2: Convert to fraction form
    259,297.90/388,791.27 = 101,338.18/x
  3. Step 3: Cross multiply
    259,297.90x = 388,791.27 × 101,338.18
  4. Step 4: Simplify right side
    259,297.90x = 39,399,399,701.69
  5. Step 5: Solve for x
    x = 39,399,399,701.69/259,297.90
  6. Step 6: Final answer
    x = 151,946.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.